Talking-machine stylus-arm



F. ADAMS,

'IAL|\1|\.IGMMHINE STYLUS AHM.

APPLICATION HLiD IUNE il, Ulu.

1,341,625, Pa'ented May 25, 1920.l

UNITED STATES PATENT OFFICE.

FREDERICK ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR T0 THE PERFEK- 7TONE CORPORATION, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF MARYLAND.

TALKING-MACHINE STYLUS-ARM.

Patented May 25, 1920.

Application led June 11., 1919. Serial No. 303,421.

To all y11i/1.0m may concern.'

Be it known that I, FREDERICK ADAMS, a citizen of the United States, residing` at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful rlalking-Machine Stylus- Arm, of which the following is a specification.

The principal objects of the present invention are, first, to provide a reproducer for successfully, acceptably and satisfactorily reproducing music and sound from either lateral-Wave or hill-and-dale records such as are to be found upon the market; and second, to facilitate and simplify the operation of using the reproducer for different kinds of records.

The invention relates principally to improvements in the stylus arm and it Will be claimed at the end hereof, but it Will be first described in connection with the embodiment of it chosen for illustration in the accompanying drawings forming part hereof and in Which- Figure l, is a side elevation of a reproducer embodying features of the invention and F ig. 2, is a view of a part of a stylus arm, drawn to an enlarged scale, and showing in section features of the invention.

Fig. 3, is an end view partly in section of Fig. 2.

In the drawings l, is a talking machine stylus arm provided with an axially disposed needle hole or bore 2, and with a second needle hole or bore 8, disposed at an inclination to the first needle hole 2. The inclination of the needle hole 3, is such that the needle or stylus will be in proper position when the diaphragm 4, of the sound box 5, faces a so-called hill-and-dale record. The axial needle hole 2, is adapted to properly position a needle or stylus for playing a lateral Wave record. 8, is the pivot of the stylus arm and the inclined needle hole 3, ranges crosswise of it. 9, is a tongue or clamping element pivoted at 10, and mounted in a cavity in the stylus arm and it is common to both needle holes2 and 3. This pivotal tongue is operated upon by either of two linger screws 'T and 7, and by their manipulation can be made to clamp and hold a needle or stylus in either needle hole 2 or 3. In this case it is unnecessary to detach either of the clamping screws 7 or 7, when changing the needle or stylus to play different kinds of records.

The pivot 8, is supported by a fitting 1l, carried by the sound box 5, and one end of the stylus arm l, is attached to the diaphragm 4. lThe described reproducer Will play lateral Wave records Without any interference by reason of the presence of my improved stylus arm, but it possesses the advantage of playing hill-and-dale records equally Well, in fact it constitutes a marked improvement in playing such records.

The described arrangement of axial and inclined needle holes is advantageous because it facilitates the use of a single fastening device 9 for coperation with each needle, and because it presents the needle or stylus in proper position both when the diaphragm is parallel With the record, and when the diaphragm is perpendicular to the record, and because of other features which will be understood by those skilled in the art.-

Inasmuch as a portion of the Wall of the needle hole includes the elongated face of a movable clamping element 9, it follows that the needle is held over a considerable portion of its surface or area and in this Way it is rigidly connected With the stylus arm and so adapted for the reproduction of music and sound Without lost motion.

I claim:

A talking machine stylus arm provided at its free end with a pair of needle holes in inclined relation, in combination with a movable clamping element common to both holes and mounted on the arm, and means for operating the clamping element for coaction with each hole, substantially as described.

FRED. ADAMS. 

